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Full-Text Articles in Physical Sciences and Mathematics
Supersymmetric Discovery Potential And Benchmarks For Early Runs At √S=7 Tev At The Lhc, Baris Altunkaynak, Michael Holmes, Pran Nath, Brent D. Nelson, Gregory Peim
Supersymmetric Discovery Potential And Benchmarks For Early Runs At √S=7 Tev At The Lhc, Baris Altunkaynak, Michael Holmes, Pran Nath, Brent D. Nelson, Gregory Peim
Pran Nath
We carry out an analysis of the potential of the Large Hadron Collider (LHC) to discover supersymmetry in runs at √s=7 TeV with an accumulated luminosity of (0.1–2) fb⁻1 of data. The analysis is done with both minimal supergravity and supergravity models with nonuniversal soft breaking. Benchmarks for early discovery with (0.1–2) fb⁻1 of data are given. We provide an update of b-tagging efficiencies in PGS 4 appropriate for LHC analyses. A large number of signature channels are analyzed, and it is shown that each of the models exhibited are discoverable at the 5σ level or more above the standard …
Gluino Nlsp, Dark Matter Via Gluino Coannihilation, And Lhc Signatures, Daniel Feldman, Zuowei Liu, Pran Nath
Gluino Nlsp, Dark Matter Via Gluino Coannihilation, And Lhc Signatures, Daniel Feldman, Zuowei Liu, Pran Nath
Pran Nath
The possibility that the gluino is the next to the lightest supersymmetric particle (NLSP) is discussed and it is shown that this situation arises in nonuniversal supergravity models within a significant part of the parameter space compatible with all known experimental bounds. It is then shown that the gluino NLSP (GNLSP) models lead to a compressed sfermion spectrum with the sleptons often heavier than the squarks at least for the first two generations. The relic density here is governed by gluino coannihilation which is responsible for a relatively small mass splitting between the gluino and the neutralino masses. Thus the …